A. begin B. definitely C. sniff D. free A. vanished B. why C. winter D. take apart A. go to a summer camp B. resign C. qualified D. wing A. season B. celebrate C. perpetual D. hurdling A. suffering B. autumn C. in class D. farthest A. suburban B. brown C. biology D. daytime A. likely B. eyesight C. make sense D. snowman A. hydro-electric B. have summer holidays C. sound D. pop music A. sail B. seem C. stay at home D. rain A. ruin B. cash C. close D. description